Wrench



1,502,900 L' BRM-Es WRENCH Filed July 7. 1922 Patented July 29, 1924.

4UNITED STATES BARBIN BRILES, F DAVIS CREEK, CALIFORNIA.

WRENCH.

Application led July 7,

Taal@ Ait may concern.' Y

. Bhe it known 'that I, LARKIN (BBI'LES, a

.o .f Athe United States, Aresiding at .Davis Greek, in the county of Medoc and .Stateof California, have invented certain and useful .Improvements in Wrenches, of .the following is a specification. y, .invention relates to improvements in wrenches and more .particularly to "that type embodying a stockcarrying a fixed jawn a -javv slidably adjustable upon 'the stock, `and meansor adjusting the slidab'le jeind one of the primary obiiects of the PIeSQTntQinVent'iQn 'is to improve the adjustaneasns and render the same more sub- 1than Ithe corresponding means .of v}: .I'eg/:iou'sly designedwrenches of this type.

Also in this Vconnection t'he invention has Jesuits flibjfect to so construct the adjusting .means `-that .it will serve to materially reinforce and brace the adjustableaw of the enphand maybe 4operated .e ciently at im @imam without binding..

Another object of the invention is to pro- A26 videa novel iawconstrnction .adapting the imdgthedilreheqnally as well as upon bo'lt ,heads and .-nuts. t M y @other olbject of the 'invention is to 30 provide connection with one of the jaw members/efface plate so supported thereon and .having its working face so vformed as t insumo-f .a firm and strong grip upon a round objectlsuoh as a pipe or :rod to 'which .35 ,the wrench 'may be applied, the face plate `being `,further so mounted. that the wrench may be/ instantly released from gripping Yengagement 'with the object upon .mere back- Y. Ward-rotation. i I Y y -the .accompanying drawing:

\ re ltis a side elevation of `the wrench ein ying the invention adapted for appliicatgiqn to pipes and other round objects.;

'gis .a vertical longitudinal Asectional A5 view `through the wrench shown in .Figure 1;

Y. 3 risa-perspective view of the shizl'tace `.plate detached from the adjustable .jawsV y 1 t u 4 is a group perspectwe View illus- -.50 -trating a modification of the invention.

The 'Wrench embodying the .invent-ibny compnisesa stock which is indicated in rgeneral by the .numeral .1 Yand lwhich .is provided wfith a handle portion 2 which may be .55 formed integrally therewith or secured 1922. seran No. 573,271.

thereto in any rsuitable manner, Preferably, however, the 1handle 42 will be integral with the stock and, Jfor 4a purpose yto be presently explaine 7 it is formed with a .longitudina'ly extending bore 3 and with Va transverse recess Y1 which is intersec'te'd by the bore, the recess vbeing located near the forward end of the bore. The bore 3 and 1recess 4 are preferably formed in an extended portion 5-of the handle 2 which portion 'lies beyond one edge of 'the shank of the stock. Lfiirel'ljaw16 is formed or provided at the forward end of the shank of the stock 1 and projects beyond the `said edge ofthe said shank and has a face 7 which is presented toward Athe forward end of 'the extended or offset portion 5 of theV handle 2. In the form of the invention shown in Figure 1 df the drawings, a face plate 8 is disposed a ainst the facef( of the jaw and is rovide' with an anchoring lug'9 which is disposed within a seat or recess l() formed in the said face 7, apin 11 beingxpassed Atransversely through 'the said jaw and through the lug to removably secure 'the'.face "late in posiflllie workinF face ofi ""late 8, in this form, 4is pre' erably serrato cated by tlienu'x'nral I2.

as indi- The. adjustable or movable "aw of 'thcwrench is indicated in general by the numerel 1'3 and Ithe sarnecompr'ises a jaw por# tionfll formed with an opening 15 adapting thefjaw to fit slidably upon the shank of the stock 1. 'This jaw is provided with a face 16 which opposesthe face 7 -o'f the jaw 6 but which is disposedat an angle of inclination to .the shank of the stock 1 and is formed with .a longitudinally extending channel 17 similarly inclined. lIn the form of the invention 'shown in Figs. 1,712 and 3 a face plateS .is provided in connection with the jawJB and A,isdisposed slidably against the face 16 of said jaw and is provided with a rib 19 which fits slidably in the channel 17. This rib is formed with a longitudinal slot 20, and a. pin 21 is removably fttedtransversel-y through the jaw 13 and extends .across 'theA channel 17 and through the said slot QOand -servesto connect the face plate with the jaw and yet permit of sliding movement of the vface plate with relation to said jaw. The face plate 18 is provided with a serrated Working face, indicated by the numeral Q2 and this working face is preferably concave in a direction longitudinally of the face plate, and the serrations which are indicated by the numeral 23, are preferably arranged to face in the general direction of the outer end of said plate 18. At its inner end the plate is recessed, as at 24, to provide spaced lugs 25 which may straddle the shank of the stock oiA the Wrench when the face plate is shifted inwardly along the race of the jaiv 13. At this point it Will be understood that initially the face plate 18 will occupy substantially the position shown in Fig. 2 of the drawings, or, in other Words, Will be at the limit of its movement away from the shank of the stock 1. However, when the jaw 13 has been suitably adjusted by means to be presently described and the Wrench is applied to a pipe, rod or other round object to be turned, and is rotated in the proper direction, the serrations 23, biting into the surface of the object, will grip the same, and the face plate 18 will be shifted along the inclined face of the jaw 13 and in the direction of the shank of the stock 1. This movement will also cause the face plate to approach the tace plate 8 so that the object will be gripped more lirmly as force is eX- erted upon the Wrench. However, if the Wrench be rotated in the reverse direction the object engaged thereby will be released automatically due to recession of the face platelS to its normal position and the Wrench may be rotated about the object to obtain a new purchase thereon.

In order that the jaw 13 may be adjusted it is provided upon its rear side with a shank 26 which extends parallel to the shank of the Wrench stock and lits more or less snugly and yet slidably into the bore 3 of the extension 5 of the handle 2. This por tion of the shank 26 is threaded, as indicated by the numeral 27, and is engaged by an adjusting nut 28 which is confined between the walls of the recess 4, as shown clearly in Figs. 1 and 2. It will be evident at this point that the jaw 13 may be conveniently and accurately adjusted by rotating the nut 28 and by reason of the fact that the shank 26 extends into the bore 3 in the handle extension 5, the shank is itself firmly braced and at the same time reinforcement is afforded the jaw 13. Furthermore, displacement of the shank 26 under stresses incident to the use of the wrench is prevented by reason of the engagement of the shank in the said bore. It will be noted that the Working face of the plate 8 is slightly inclined with respect to the adjacent longitudinal edge of the shank 1, vvliile the Working face of the plate 18 is more pronouncedly inclined with respect to said longitudinal edge whereby to rmly grip an object supported between said face plates.

As previously stated the pins 11 and 21 are removable and their removal permits of the detachment of the face plates 8 and 18 so that other face plates such, for example, as those shown in Fig. 1l, may be substituted therefor. One of these iace plates is indicated by the numeral 29 and is provided with a ilat or plane working face 30 and with a lug upon its opposite tace indicated by the numeral 31 and corresponding in lorm and function to the lug 9. The other face plate in this modified structure is indicated by the numeral 32 and the same is of substantial Wedge shape being thicker at one end than at the other and therefore having a Working face 33 which, in the applied position of the plate, Will occupy a plane parallel to the Working face 3() of the plate 29, the opposite face 34 of the plate 32 being disposed in a plane at an angle to the plane of the face 33 and corresponding in its inclination to that of the face 16 of the jaw 13.V

may be respectively substituted for each other depending upon the nature of the object to which the Wrench is to be applied.

Having thus described the invention, what is claimed as new is :Y

1. A Wrench comprising a shank and coacting jaws having opposing faces, one of which is adjustable with relation to the other, Working face of the plates mounted upon the jaws, the face plate of one of the jaws being slightly inclined With respect to the longitudinal edge of the shank andthe Working face of the plate of the other jaw being more pronouncedly inclined with respect to said longitudinal edge, and means including a pin and slot connection for slid ably supporting one of said face plates upon the adjacent jaw, the Workin face of said plate being, when the plate 1s in position, located in a plane diverging from the plane of the face of the first-mentioned jaw and in the direction of the outer ends ot the jaws, the last-mentioned face plate being arranged for coaction with the other face plate to grip an object supported therebetween.

2. A Wrench comprising a shank having a fixed jaw, a movable iavv slidably mounted on the shank and having an inclined groove formed therein, the Walls of which are perforated, a face plate slidably mounted on the movable jaw and having a depending slotted rib fitting in the groove of the movable jaw and provided with spaced terminal lugs adapted to span an adjacent portion of the shank, a pin extending through the perforations in the movable jaw and through the slot in the rib of the face plate for limitjaw being more pronouncedly inclined with ing the sliding movement of said face plate, respect to said longitudinal edge whereby to and a face plate carried by the fixed jaw, the lirmly grip an object supported between Said 10 working face of the plate of the fixed jaw face plates.

5 being slightly inclined with respect to the In testimony whereof I affix my signature.

longitudinal ed e of the shank and the working face o the plate of the movable LARKIN BRILES. [LA] 

